Collection system for surgical use

ABSTRACT

A surgical collection assembly for filtering material from liquid obtained during surgery. A jar having an inlet and an outlet each adapted for connection to a suction line. A set of orientation features to position an upper portion of a collection basket within the jar such that an upper portion of the collection basket does not impede a flow of material entering the jar through the inlet. A bottom surface with a pattern of recessed paths in the bottom surface, the pattern of recessed paths connected to the outlet. A plunger assembly that may be reversibly attached to the jar so that a distal end of a plunger may be used to compress collected material within the collection basket to help remove fluid from the collected material. For certain uses, the surgical collection assembly may have a simple jar lid without an integrated plunger.

This application claims priority to co-pending and commonly owned Patent Cooperation Treaty Patent Application No. PCT/US2016/046913 filed Aug. 12, 2016 for Collection System for Surgical Use, the '913 application is incorporated by reference herein.

BACKGROUND Field of the Disclosure

This disclosure relates generally to systems that collect surgical samples via suction and filtration.

Terminology

Or—Unless explicit to the contrary, the word “or” should be interpreted as an inclusive or rather than an exclusive or. Thus, the default meaning of or should be the same as the more awkward and/or.

Specimen Collection—The term should be read broadly to include anything that might be collected and analyzed in pathology through biopsy or other processes.

Tissue—The term tissue should be read expansively to include any portion of a patient that may be removed from the surgical site by suction and then separated from fluids by filtration. This may include pieces of bone, organs, muscle, or other matter. The material gathered may include foreign substances that were introduced into the patient.

Patient—The term patient should be read expansively to include humans, cadavers undergoing autopsies or used in training, and animals undergoing a surgical procedure.

SUMMARY OF THE DISCLOSURE

Aspects of the teachings of the present disclosure may be stated as a surgical collection assembly for filtering material from liquid obtained during surgery; the surgical collection assembly having a jar. The jar having:

-   -   an open end that may be reversibly sealed with a jar top;     -   an inlet adapted for connection to a suction line;     -   an outlet adapted for connection to a suction line;     -   a set of orientation features to position an upper portion of a         collection basket within the jar such that an upper portion of         the collection basket does not impede a flow of material         entering the jar through the inlet;     -   a bottom surface with a pattern of recessed paths in the bottom         surface, the pattern of recessed paths connected to the outlet;

The surgical collection assembly also having a collection basket with sidewalls and a bottom connected to an upper portion of the collection basket so that the upper portion of the collection basket can be used to position the collection basket within the jar.

The surgical collection assembly also having a plunger assembly. The plunger assembly having a jar top that can be reversibly connected to the open end of the jar; the jar top having a bore that allows a plunger rod with a distal end to move relative to the jar top so that a distal end of a plunger may be used to compress collected material within the collection basket to help remove fluid from the collected material.

The plunger assembly also having a plunger with a distal end to compress collected material and a plunger rod to pass through the bore in the jar top so a proximal end of the plunger may be moved by a user.

The surgical collection assembly adapted to allow suction applied to the outlet of the jar to pull liquid and non-liquid material through a tube connected to the inlet of the jar; the liquid and non-liquid material passing into the collection basket with much of the liquid leaving the collection basket through at least a portion of the collection basket to enter the pattern of recessed paths in the bottom surface and then out the outlet leaving a filtered portion of the non-liquid material in the collection basket.

For certain uses, the surgical collection assembly may have a simple jar lid without an integrated plunger.

Aspects of the teachings of the present disclosure may be summarized as a method for gathering collected material from a surgical procedure and compressing the collected material to remove fluid. The method including inserting a first collection basket into a collection jar. The collection jar having an inlet and an outlet. The collection jar outlet in fluid communication with a recessed pattern in a basket side of a bottom of the collection jar. Applying suction to the outlet will pull material through inlet tubing connected to the inlet, the material passing through the inlet, with at least some fluid in the material passing through the first collection basket and into the recessed pattern then to the outlet to leave filtered material in the first collection basket. The step of inserting the first collection basket into the collection jar guided by an interaction of the collection jar and the first collection basket precluding placement of a set of at least one basket handle in a position that obstructs the inlet.

The method including placing a plunger assembly onto the collection jar; connecting inlet tubing to the inlet; and connecting outlet tubing to the outlet. The order of these three actions not material to the method.

The method including applying suction to the outlet tubing connected to the outlet so that whenever a non-jar end of the inlet tubing is placed into a surgical site, fluids and small materials are pulled through the inlet tubing through the inlet and into the first collection basket.

The method including removing a non-jar end of the inlet tubing from the surgical site and using the plunger assembly to move a distal end of a plunger downward to compress materials collected in the first collection basket.

Removing the plunger assembly from the collection jar while the inlet tubing is still connected to the inlet and the outlet tubing is still connected to the outlet and removing the first collection basket with compressed material from the collection jar.

Repeating the process with a second collection basket which may be the first collection basket after material is removed from the first collection basket.

Additional aspects of the teachings contained within this disclosure are addressed in the claims submitted with this application upon filing. Rather than adding redundant restatements of the contents of the claims, these claims should be considered incorporated by reference into this summary.

This summary is meant to provide an introduction to the concepts that are disclosed within the specification without being an exhaustive list of the many teachings and variations upon those teachings that are provided in the extended discussion within this disclosure. Thus, the contents of this summary should not be used to limit the scope of the claims that follow.

Inventive concepts are illustrated in a series of examples, some examples showing more than one inventive concept. Individual inventive concepts can be implemented without implementing all details provided in a particular example. It is not necessary to provide examples of every possible combination of the inventive concepts provide below as one of skill in the art will recognize that inventive concepts illustrated in various examples can be combined together in order to address a specific application.

Other systems, methods, features and advantages of the disclosed teachings will be immediately apparent or will become apparent to one with skill in the art upon examination of the following figures and detailed description. It is intended that all such additional systems, methods, features and advantages be included within the scope of and be protected by the accompanying claims.

BRIEF DESCRIPTION OF THE FIGURES

The disclosure can be better understood with reference to the following figures. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the disclosure. Moreover, in the figures, like reference numerals designate corresponding parts throughout the different views.

FIG. 1 shows an exploded front view of a surgical collection assembly 100.

FIG. 2 provides a front view of the surgical collection assembly 100.

FIG. 3 shows a cross section of the view from FIG. 2 taken through the midlines of the inlet 124 and outlet 128.

FIG. 4 shows the plunger rod 220 moved downward so that the distal end 224 of the plunger rod 220 is just above the basket bottom 156.

FIG. 5 is top front perspective view of the jar 120.

FIG. 6 is the same view as FIG. 5 but the basket ring 158 is removed so that the portions of the jar 120 that support and position the basket ring 158 may be seen.

FIG. 7 shows a cross section of the jar 120 taken again through the inlet 124 and outlet 128.

FIG. 8 provides a top perspective view of alternative cap 304, including female threads 216 to engage corresponding male threads 132 of the jar 120.

FIG. 9 provides a bottom perspective view of alternative cap 304, including female threads 216 to engage corresponding male threads 132 of the jar 120.

FIG. 10 provides a view of jar 320 as set to transparent to allow view of the basket ring 358.

FIG. 11 is a top perspective view of jar 320 showing basket ring 358 but not the basket.

FIG. 12 is a top perspective view of jar 320 without the basket ring 358 shown in FIG. 11.

FIG. 13 is a top, left, front perspective view of jar 420.

FIG. 14 is a bottom, right, front perspective view of jar 420.

FIG. 15 is a top plan view of jar 420.

FIG. 16 is a front view of jar 420.

FIG. 17 is a bottom plan view of jar 420.

FIG. 18 is a left side view of jar 420.

FIG. 19 is a right side view of jar 420.

FIG. 20 is a top and front perspective view of jar 420.

FIG. 21 is a top, right, rear perspective view of a cross section of jar 420 taken as indicated in FIG. 4.

FIG. 22 is a top, front perspective view of basket 454.

FIG. 23 is a bottom, right perspective view of basket 454.

FIG. 24 is a top plan view of basket 454.

FIG. 25 is a front, left perspective view of basket 454.

FIG. 26 is a bottom plan view of basket 454.

FIG. 27 is a right, front perspective view of basket 454.

FIG. 28 is a top perspective view of the interior of the cross section of FIG. 24.

FIG. 29 top perspective view of plunger & cap assembly 480.

FIG. 30 bottom perspective view of plunger & cap assembly 480.

FIG. 31 is a side view of plunger & cap assembly 480.

FIG. 32 is a top plan view of plunger & cap assembly 480.

FIG. 33 is a bottom plan view of plunger & cap assembly 480.

FIG. 34 is a side view of a cross section of FIG. 33.

FIG. 35 is a top, side perspective view of a cross section of FIG. 33.

FIG. 36 is a top, side perspective view of a cross section of FIG. 33.

DETAILED DESCRIPTION

FIG. 1 shows an exploded front view of a surgical collection assembly 100. Visible in FIG. 1 are jar 120 with inlet 124 and outlet 128. The inlet 124 and outlet 128 may have a shape designed to retain tubing such as a barbed profile. Jar 120 has a set of male threads 132 for engaging a corresponding set of female threads 216 (not shown here) within cap 204.

A basket ring 158 is used to position a basket 150 within the jar 120 to allow the basket to collect material filtered from a flow of suctioned material taken from the surgical site. The basket 150 may be constructed so that a basket sidewall 154 is connected to a basket bottom 156.

Suction applied to the outlet 128 of the jar 120 through suction side tubing (not shown) pulls material from the surgical site into surgical side tubing (not shown) into the inlet 124 of jar 120 and into the basket 150. Suction pressure removes much of the liquid content of the material provided to the basket 150 as the basket 150 serves as a filter to separate non-liquids from the liquid removed from the surgical site.

A plunger assembly 200 has plunger rod 220 with a broad distal end 224 that may be moved to compress the contents of the basket 150 to remove additional fluids from the collected material. The plunger rod 220 has a proximal end 228 that fits through a bore 232 (not visible here). The bushing 212 and 0-ring 208 help maintain a vacuum seal around the plunger rod 220. The bushing 212 is press fit into the bore 232 to capture the O-ring 208 to tightly fit around plunger rod 220 and inside the bore to provide an adequate vacuum seal. The vacuum seal does not need to be perfect, but should be sufficient so that suction applied to the outlet 128 to provide suction to the inlet 124 is sufficient for use in pulling material from the surgical site. If the opening at the surgical site is covered by something that cannot be pulled into the opening, then the suction may pull some air through the seal around the plunger rod 220 but small quantities of in-leakage is not a problem.

The proximal end 228 of plunger rod 220 fits through the interior of spring 260 and into a bore in plunger rod handle 240. The connection between the proximal end 228 of the plunger rod 220 and the bore in the plunger rod handle 240 may be made in a number of ways. The connection may be a threaded connection and thus reversible. The connection may be a non-reversible connection made via any of number of techniques known to those of skill in the art including a snap fit. Gluing may be used instead of a snap-fit if there is a desire for a secure connection.

The spring 260 holds the plunger rod 220 in an elevated position with the distal end 224 of the plunger rod 220 above the flow of material entering the jar 120 through the inlet 124. The plunger rod handle 240 may be pushed down against the spring force to push the distal end 224 of the plunger rod 220 downward to compress material collected in the basket 150 to further remove fluid.

FIG. 2 provides a front view of the surgical collection assembly 100. FIG. 3 shows a cross section of the view from FIG. 2 taken through the midlines of the inlet 124 and outlet 128.

Visible in FIG. 2 and FIG. 3 are previously referenced elements: plunger rod handle 240, plunger rod 220, spring 260, bushing 212, cap 204, inlet 124, jar 120, and outlet 128.

Additional elements visible in FIG. 3 that are not visible in FIG. 2 include: O-ring 208 resting on ledge 236 in bore 232, proximal end 228 of plunger rod 220, distal end 224 of plunger rod 220, basket ring 158, basket 150, female threads 216 on cap 204, and male threads 132 on jar 120.

Note that FIG. 3 provides a view of the seal around the plunger rod 220 as the bushing 212 encloses the O-ring 208 between the bushing 212 and the ledge 236 within the bore 232 of the cap 204.

A careful observer will note that the model shows the O-ring 208 in the shape it assumes before engagement with the uncapped plunger rod 220. The O-ring is compressed between the plunger rod 220 and the cap 204. However, the bushing 212 is not designed to compress the O-ring 208.

FIG. 4 shows the plunger rod 220 moved downward so that the distal end 224 of the plunger rod 220 is just above the basket bottom 156. Force applied to the plunger rod handle 240 has compressed the spring 260. Also visible in this view is cap 204 and basket ring 158. In order to show the relationship between the distal end 224 of the plunger rod 220 and the basket bottom 156, the jar 120 and sidewalls of the basket 150 have been made invisible.

After releasing the plunger rod handle 240, the distal end 224 of the plunger rod 220 will move upward relative to the basket 150 as the spring force is sufficient to return the plunger rod handle 240 to the upper position. It is possible that during the compression of collected material that some collected material may fill any void between the outer perimeter of the distal end 224 of the plunger rod 220 in the inner perimeter of the basket 150. To minimize any tendency to lift the basket 150 out of position, the basket ring 158 has a pair of handles 162 (one handle visible in FIG. 3). The top edge 160 of the handle 162 is positioned very close to the inside face 206 of the cap 204 so that the distal end 224 of the plunger rod 220 continues to move upward after the top edge 160 of the handle 162 strikes the inside face 206 of the cap 204 so that the basket 150 becomes dislodged from the distal end 224 of the plunger rod 220.

Placement of Inlet and Outlet on Jar.

Note that by having both the inlet 124 and the outlet 128 located on the jar 120 and not split between the jar 120 and the cap 204, the rotating the plunger & cap assembly 200 to remove the plunger & cap assembly 200 to expose the interior of the jar 120 may be done without disconnecting the vacuum side tubing connecting the outlet 128 to the vacuum source and without disconnecting the surgical side tubing connected to the inlet 124. Thus neither the connection of tubing to the inlet 124 or to the outlet 128 needs to be a more expensive quick disconnect connection such as a bayonet connection.

Allowing quick removal of the plunger & cap assembly 200 from the surgical collection assembly 100 to expose the basket 150 allows collected material to be removed and a new basket 150 to be inserted. As the connections to the inlet 124 and outlet 128 are in place, the process of collecting can resume quickly after the plunger & cap assembly 200 is re-engaged with the jar 120.

A second advantage of having the inlet 124 on the jar 120 rather than on the cap 204 is that this placement helps keep material coming in through the inlet from getting up on the top side of the broad distal end 224 of the plunger rod 220. This avoids wasting material that could have been collected in the basket 150 and reduces the opportunity for material to interfere with the operation of the plunger rod 220.

When using the plunger rod 220 to press the collected material, an operator may wish to lift the surgical end of the surgical side tubing out of the surgical site so that only air is entering the inlet 124. The suction source may be left on during this process to help remove fluids that are pressed out of the collected material.

FIG. 5 is top front perspective view of the jar 120. For purposes of illustration, a basket ring 158 is visible in FIG. 5, but the basket ring 158 does not have a basket sidewall 154 or basket bottom 156. FIG. 6 is the same view as FIG. 5 but the basket ring 158 is removed so that the portions of the jar 120 that support and position the basket ring 158 may be seen.

The basket ring 158 may be described as a pair of handles 162. Between the handles 162 are portions of the basket ring 158 that may be called inter-handle segments 166. The inter-handle segments 166 may be distinguished from the intra-handle segments 170 which may be thinner than the inter-handle segments 166.

The difference between the intra-handle segments 170 and the inter-handle segments 166 allows the basket ring 158 to be oriented within the jar 120 to avoid blocking the inlet 124. The jar 120 orients the basket ring 158 by locating long ribs 136 and short ribs 140. The inter-handle segments 166 may rest on short rib ledges 144 but are too wide to be aligned with the long ribs 136. In contrast, the narrower intra-handle segments 170 can fit inside the perimeter formed by the upper portions 152 of the long ribs 136 and rest upon the long rib ledges 148.

Recessed Pattern.

As noted in FIG. 6 the jar 120 has a bottom surface 190 that supports the bottom surface of the basket 150 including when the plunger rod 220 is compressing material within the basket 150. A recessed pattern 194 fans out from the outlet mouth 198 so that suction pulling on the outlet 128 applies suction pressure throughout the recessed pattern 194 to pull liquids from the basket 150 and draw the liquid to the outlet mouth 198 and out the outlet 128. The pattern used for the recessed pattern 194 does not need to be identical to the pattern shown here. A number of different patterns are possible. While symmetry on either side of a midline between the inlet 124 and 128 may be a natural choice, this is not required. The width and depth of the recessed pattern does not need to be uniform. A pattern that allows suction to reach a distal end of the pattern even if a small obstruction is lodged in a portion of the pattern has advantages over a pattern that lacks the cross links that allow for alternate routes for drainage.

FIG. 7 shows a cross section of the jar 120 taken again through the inlet 124 and outlet 128. The cross section has been rotated to move the cap 204 towards the observer to allow bottom surface 190, recessed pattern 194, and outlet mouth 198 to be visible relative to the basket 150 and in particular to the basket bottom 156. Notice that the combination of the basket ring 158, long ribs 136 and short ribs 140 impede flow from the inlet 124 to the outlet 128 that passes around the perimeter of the basket 150. Having the distal ends of the recessed pattern 194 terminate beyond the outer edges of the basket 150 provides suction beneath the basket ring 158 to pull fluids from the basket sidewalls 154 in addition to pulling fluid from the basket bottom 156.

Basket Formation.

A variety of techniques may be used to make a basket and basket ring assembly in keeping with the teachings of this disclosure. As noted above, the basket may be made of a sidewall joined to a bottom. The connection of the sidewall to the bottom may be connected via stitching. Alternatively, the connection of the sidewall to the bottom may be accomplished by placing a flexible ring at the bottom perimeter of the basket and connecting both the sidewall and the bottom to the flexible ring. The connection may be via stitching, over molding, heat sealing, or some other connection process that is suitable for use in collecting bone material that will be used in a surgical procedure. The connection to the basket ring may be heat staked, welded, or connected via adhesive. The bottom may be on the same plane as the bottom edge of the sidewalls.

Having a basket 150 which is flexible allows the basket bottom 156 to be moved relative to the basket ring 158 so that the basket 150 is inverted to that that interior surfaces of the basket 150 during collection become the outer surfaces of the basket 150 during delivery of collected material.

The basket material will be chosen by the designer as part of the total design but a basket made of material that has open area in the range of 47% with a mesh opening in the range of 200 micrometers may be used with certain baskets and applications. For context, 200 micrometers (also known as microns) is the type of filtration that might be used to remove fine sand from a liquid.

Those of skill in the art will appreciate that the disclosed surgical collection assembly 100 provides a basket with extensive filter surface area that allows for continuous filtration throughout the collection process. The large surface area of the basket and other features of the disclosed surgical collection assembly 100 make the assembly resilient to the presence of material that might clog and impair another collection system.

The mobility of the basket is also important to allow collected material to be moved to prep table, while allowing a cap to be placed back on and regular suction to be continued.

Alternatives and Variations.

Alignment of Inlet and Outlet.

The jar 120 has been shown with the inlet 124 to the outlet 128 offset by 180 degrees. This offset is believed to be useful because it allows for captured product to fill the entire basket because flow is across the diameter of the basket. If ports were on the same side, you may have product build up on one side of the basket. By having the inlet 124 arranged above the basket and the outlet pulling material from below the basket, the surgical collection assembly 100 is not reliant on gravity as the suction force is sufficient to promote proper operation even in the event that the jar 120 is knocked over so it is horizontal rather than vertical.

While there are advantages to having the inlet 124 to the outlet 128 offset by 180 degrees, there would be similar advantages with something less than a 180 degree offset. Even 90 degrees would provide substantial advantages. Those of skill in the art will appreciate that a surgical collection assembly 100 with an inlet 124 located directly above the outlet 128 would be a viable collection device even if such a collection device did not have the suggested 180 degree offset.

Having the outlet 128 located near the bottom of the jar 120 increases the ability of the collection device to be cleared of fluid relative to the use of the same suction source with an outlet placed close to the top of the jar.

Specimen Collection Lid.

The jar 120, basket 150 with basket ring 158 may be used with an alternative cap 304 that does not have a bore for use with a plunger rod but is a solid top. This alternative cap 304 may be used when the jar 120 and basket 150 are employed to filter out material taken via suction from a surgical site. This material may be bone which is prepared and reused but is more likely to be material to be collected and sent for analysis.

FIG. 8 and FIG. 9 provide a top and bottom perspective view of alternative cap 304, including female threads 216 to engage corresponding male threads 132 of the jar 120.

Alternative Way to Avoid Blocking the Inlet.

Disclosed above was a method to orient the basket ring to avoid interfering with the ingress of suction material passing from the inlet into the interior of the basket. The basket ring was oriented using an interaction between the basket ring 158 and the short rib ledges 144 and long rib ledges 148.

An alternative way to orient a basket ring 358 within jar 320 is disclosed. FIG. 10 provides a view of jar 320 as set to transparent to allow view of the basket ring 358. Basket 150 is shown with just the basket bottom 156 visible to avoid obstructing views of the ribs 340. The basket ring 358 rests on a set of rib ledges 344. The rib ledges 344 on the top of the set of ribs 340 set the height of the basket ring 358. A set of one or more orientation tab 380 sets the orientation of the basket ring 358 so that the one or more handles 362 are in defined positions with respect to the set of ribs 340. As shown in FIG. 10 there are a pair of handles 362 and they can be place in a number of positions including having one handle 362 placed between the ribs 340 on either side of the inlet 124. The handle opening 364 is sized so that the flow of material coming into the jar 320 from the inlet 124 would pass through the handle opening 364 and the handle 362 would not serve as an impediment.

One of skill in the art will appreciate that additional short ribs may be placed on the sidewall of the jar 320 to prevent a choice of putting the handle 362 near the inlet so that the handle opening 364 would not need to be sized to accommodate flow through the handle opening 364.

While placing the orientation tabs 380 beneath the handles 362 is one approach, the orientation tabs 380 could be placed elsewhere. There does not need to be a one to one correspondence between the number of orientation tabs and the number of handles.

FIG. 11 and FIG. 12 show the jar 320 as a solid object. The basket is rendered invisible to allow the ribs 340 and rib ledges 344 to be visible. The difference between FIG. 11 and FIG. 12 is the basket ring 358 is made invisible in FIG. 12.

Jar 320 and basket 150 may be used with plunger & cap assembly 200 if the material collected in the basket 150 is to be compressed while in the jar 320 or may be used with an alternative cap 304 if there is no intent to use a plunger to compress the collected material in the jar 320.

The basket and rib concept introduced through FIG. 10, FIG. 11, and FIG. 12 may be used with jar 420 and basket 454. A set of drawings shows these components without the clutter of lead lines and element numbers. A set of drawings without lead lines and element numbers shows a plunger & cap assembly 480 that may be used with jar 420 and basket 454.

FIG. 13 is a top, left, front perspective view of jar 420.

FIG. 14 is a bottom, right, front perspective view of jar 420.

FIG. 15 is a top plan view of jar 420.

FIG. 16 is a front view of jar 420.

FIG. 17 is a bottom plan view of jar 420.

FIG. 18 is a left side view of jar 420.

FIG. 19 is a right side view of jar 420.

FIG. 20 is a top and front perspective view of jar 420.

FIG. 21 is a top, right, rear perspective view of a cross section of jar 420 taken as indicated in FIG. 4.

FIG. 22 is a top, front perspective view of basket 454.

FIG. 23 is a bottom, right perspective view of basket 454.

FIG. 24 is a top plan view of basket 454.

FIG. 25 is a front, left perspective view of basket 454.

FIG. 26 is a bottom plan view of basket 454.

FIG. 27 is a right, front perspective view of basket 454.

FIG. 28 is a top perspective view of the interior of the cross section of FIG. 24.

FIG. 29 top perspective view of plunger & cap assembly 480.

FIG. 30 bottom perspective view of plunger & cap assembly 480.

FIG. 31 is a side view of plunger & cap assembly 480.

FIG. 32 is a top plan view of plunger & cap assembly 480.

FIG. 33 is a bottom plan view of plunger & cap assembly 480.

FIG. 34 is a side view of a cross section of FIG. 33.

FIG. 35 is a top, side perspective view of a cross section of FIG. 33.

FIG. 36 is a top, side perspective view of a cross section of FIG. 33.

Kits.

The surgical collection assembly 100 with jar 120 and plunger & cap assembly 200 may be delivered in a kit with a piece of suction tubing fixed to the inlet port. Delivery of suction tubing ensures use of clean suction tubing between the collection site and the inlet of the jar 120 so that the collected material is free from other debris that may have been created and removed by other suction tubing. This can be important when the material collected, such as bone, is going to be used for a specific purpose. Providing tubing with the jar 120 ensures that tubing of suitable flexibility is provided to ensure for easier maneuvering of the end of the suction tubing. Finally, delivering the jar 120 with tubing affixed to the inlet removes one source of error for setting up the surgical collection assembly.

The kit may contain two or more baskets. The kit may include an alternative cap 304 in addition to a plunger & cap assembly 200.

Non-Circular Jar.

Note that while the examples provided in this disclosure had a jar with a circular cross section, one of skill in the art will appreciate that a jar with another cross section could be used. For example, the cross section could be oval or egg shaped. Alternative cross sections may be used as long as the design had an engagement between the plunger assembly (or specimen collection lid) and the jar that worked appropriately. Most likely this would be something other than a threaded engagement with the jar. The basket assembly would need to be sized appropriately but would not have to have the exact cross section shape of the jar.

Alternative Baskets.

While the taught the use of baskets with liquid permeable bottoms and liquid permeable sides, those of skill in the art will recognize that for certain applications the bottom may be liquid permeable while the sidewalls are not. This may be appropriate when the collection basket has a very large bottom surface or when the collection process is not intended to collect so much filtered material that the filtered material would get deep. Such a basket may seem more like a relatively flat pan than an elongated cylinder

Alternatively, a basket might have a bottom that is not permeable to liquid and rely on the fluids to be pulled out the liquid permeable sidewalls. In such a basket, the basket bottom may be small so that as layers of collected materials pile up, the materials are partially dried by the removal of fluids through nearby sidewalls. Such a basket may seem more like an elongated cylinder than a relatively flat pan.

One of skill in the art will recognize that some of the alternative implementations set forth above are not universally mutually exclusive and that in some cases additional implementations can be created that employ aspects of two or more of the variations described above. Likewise, the present disclosure is not limited to the specific examples or particular embodiments provided to promote understanding of the various teachings of the present disclosure. Moreover, the scope of the claims which follow covers the range of variations, modifications, and substitutes for the components described herein as would be known to those of skill in the art. 

1. A surgical collection assembly for filtering material from liquid obtained during surgery; the surgical collection assembly comprising: a collection basket, a collection jar, and a plunger assembly; the collection basket having: basket sidewalls between a basket bottom and an upper portion of the collection basket; the upper portion of the collection basket having a set of at least one basket handle to allow the collection basket to be removed from the collection jar; a permeable portion of the collection basket being liquid permeable; and the collection basket sized relative to the collection jar so that a gap exists between the collection basket and the collection jar; the gap connected to ajar outlet; the collection jar comprising: a walled perimeter of the collection jar joined to a bottom surface of the collection jar; the walled perimeter of the collection jar defining an open end that may be reversibly sealed with ajar top; a jar inlet located on the walled perimeter; the jar outlet located on the walled perimeter; the jar inlet located closer to the open end than the jar outlet; a set of orientation features to control a rotational position of the upper portion of the collection basket within the collection jar such that the set of at least one basket handle on the upper portion of the collection basket does not impede a flow of material entering the collection jar through the jar inlet; the plunger assembly comprising: a plunger with a distal end to compress collected material; and a plunger rod to pass through a bore in the jar top so a proximal end of the plunger may be moved by a user; and the jar top that can be reversibly connected to the open end of the collection jar; the jar top having a bore that allows the plunger rod to move relative to the jar top so that the distal end of the plunger may be used to compress collected material within the collection basket to help remove fluid from the collected material; the surgical collection assembly adapted to allow suction applied to the jar outlet to pull liquid and non-liquid material through a section of tubing connected to the jar inlet of the collection jar; the liquid and non-liquid material passing into the collection basket with much of the liquid leaving the collection basket through the permeable portion of the collection basket to enter the gap between the collection basket and the collection jar and then out the jar outlet leaving the collected material in the collection basket; the surgical collection assembly adapted to allow separation of the plunger assembly from the collection jar and then removal of the collection basket from the collection jar to retrieve the collected material from the collection basket without disconnecting a suction line from the jar outlet; and without disconnecting the section of tubing from the jar inlet so that a second collection basket may be inserted into the collection jar and collected material may be obtained after attachment of the plunger assembly; and the collection basket being sufficiently flexible to allow the basket bottom of the collection basket to be passed through the upper portion of the collection basket to at least partially invert the collection basket and facilitate removal of the collected material.
 2. The surgical collection assembly of claim 1 wherein at least a portion of the basket sidewalls are liquid permeable.
 3. The surgical collection assembly of claim 1 wherein at least a portion of the basket bottom is liquid permeable.
 4. The surgical collection assembly of claim 1 wherein the bottom surface of the collection jar has a pattern of recessed paths that are connected to the jar outlet.
 5. The surgical collection assembly of claim 1 wherein: the set of orientation features to position the upper portion of the collection basket force the set of at least one basket handle to be located in one of a set of predefined positions within the collection jar; and at least one of the set of predefined position within the collection jar aligns an opening in at least one basket handle with the jar inlet so that when suction is applied to the jar outlet to pull liquid and non-liquid material through the section of tubing connected to the jar inlet, the liquid and non-liquid material pass into the collection basket through the opening in the at least one basket handle.
 6. The surgical collection assembly of claim 1 wherein: the set of at least one basket handle is adapted to make contact with a collection basket side of the jar top to allow the distal end of the plunger to detach from collected material within the collection basket to allow the collection basket to drop back into place if the distal end of the plunger sticks to the collected material within the collection basket after compressing the collected material within the collection basket and moving the distal end of the plunger away from the bottom surface of the collection jar causes the collection basket to move with the distal end of the plunger.
 7. The surgical collection assembly of claim 1 wherein the jar inlet and jar outlet are on opposite sides of the walled perimeter of the collection jar.
 8. The surgical collection assembly of claim 1 wherein the jar inlet and jar outlet are not on opposite sides of walled perimeter of the collection jar. 10.-13. (canceled)
 14. A method for gathering collected material from a surgical procedure and compressing the collected material to remove at least some fluid from the collected material, the method comprising: obtaining the surgical collection assembly for filtering material from liquid obtained during surgery of claim 1; inserting the collection basket with the permeable portion into the collection jar; such that suction applied to the jar outlet will pull the flow of material through inlet tubing connected to the jar inlet, the flow of material passing through the jar inlet, with at least some fluid in the flow of material passing through the permeable portion of the collection basket and into the gap then to the jar outlet to leave collected material in the collection basket; the step of inserting the collection basket into the collection jar guided by an interaction of the collection jar and the collection basket precluding placement of any basket handle from a set of at least one basket handle in a position that obstructs the jar inlet; placing the plunger assembly onto the collection jar; connecting inlet tubing to the jar inlet; connecting outlet tubing to the jar outlet; applying suction to the outlet tubing connected to the jar outlet so that whenever a non-jar end of the inlet tubing is placed into a surgical site, fluids and small materials are pulled through the inlet tubing through the jar inlet and into the collection basket; removing the non-jar end of the inlet tubing from the surgical site; using the plunger assembly to move the distal end of the plunger downward toward the basket bottom of the collection basket to compress the collected material in the collection basket; removing the plunger assembly from the collection jar while the inlet tubing is still connected to the jar inlet and the outlet tubing is still connected to the jar outlet; removing the collection basket with the collected material from the collection jar; inserting a second collection basket into the collection jar; placing the plunger assembly onto the collection jar; using suction to pull liquids and material from the surgical site through the inlet tubing, and jar inlet and into the second collection basket; the suction working to pull some liquids from the second collection basket, through the gap and out the jar outlet; using the plunger assembly to move the distal end of the plunger downward towards a basket bottom of the second collection basket to compress collected material in the second collection basket; removing the plunger assembly from the collection jar; removing the second collection basket with collected material from the collection jar; removing collected material from the collection basket by moving the bottom of the collection basket through an upper portion of the collection basket to at least partially invert the collection basket; and removing collected material from the second collection basket by moving the bottom of the second collection basket through the upper portion of the second collection basket to at least partially invert the second collection basket.
 15. The method of claim 14 wherein the second collection basket is the collection basket after retrieval of the collected material from the collection basket.
 16. The method of claim 14 wherein the second collection basket is not the collection basket after retrieval of the collected material from the collection basket.
 17. The method of claim 14 further including moving the distal end of the plunger upward above the jar inlet after using the distal end of the plunger to compress the collected material in the collection basket and before removing the plunger assembly from the collection jar while the inlet tubing is still connected to the jar inlet and the outlet tubing is still connected to the jar outlet.
 18. The method of claim 17 wherein moving the distal end of the plunger upward above the jar inlet is accomplished by allowing a spring force to move the plunger upward.
 19. The method of claim 17 wherein the collected material in the collection basket binds the collection basket to the distal end of the plunger so that moving the distal end of the plunger upward moves the collection basket upward until the set of at least one basket handle on the collection basket makes contact with a collection basket side of the jar top and dislodges the collection basket from the distal end of the plunger.
 20. The method of claim 14 wherein the gap between the collection basket and the collection jar includes a volume between a bottom of the collection basket and the collection jar.
 21. The method of claim 14 wherein the gap between the collection basket and the collection jar includes a space between a sidewall of the collection basket and the collection jar. 